Practice Global Stiffness Matrix Assembly (4.2) - Engineering Analysis

Practice: Global Stiffness Matrix Assembly

Lesson 4.2Engineering Analysis

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define the element stiffness matrix.
Show hintHide hint
Think about how an element resists external forces.
Question 2.
What is a global stiffness matrix?
Show hintHide hint
Consider the whole assembly of elements.
3Question 3.
What does the element stiffness matrix represent?
- Constrain displacements
- Relate nodal forces to displacements
- Compute stress
Show hintHide hint
Remember the role of the stiffness matrix in deformation.
4Question 4.
True or False: The global stiffness matrix is assembled by summing all element stiffness matrices?
- True
- False
Show hintHide hint
Think about each element's contribution to the whole.
Question 5.
You have a truss structure made of four members connected at node A. If the stiffness of each member is known, derive the global stiffness matrix and examine how applying a force at node B affects the structure.
Show hintHide hint
Consider the connectivity and contribution of each element to the nodes.
Question 6.
Analyze the impact of not applying appropriate boundary conditions to a cantilever beam under point load. Illustrate the effects on the results interpreted from the stiffness matrix.
Show hintHide hint
Think about how the beam would physically behave if it was not fixed at one end.

5 more questions in this section. Enroll free to practise them all.